modulecmd: ununsed function die_is_blocked() removed

Pmodules/modulecmd.bash.in

@@ -273,12 +273,6 @@ die_removing_collection_failed(){
 		 "cannot remove collection" "$1"
 }
 
-die_is_blocked(){
-	std::die 3 "%s %s: %s -- %s" \
-		 "${CMD}" "${subcommand}" \
-		 "module is blocked on this system" "$1"
-}
-
 get_module_config(){
 	: "
 	Read module configuration.